Addison wiley



(No Model.) 2 Sheets-Sheet 1.

A. WILEY.

THERMOTIG REGULATOR POR INDICATORS. No. 375,035'.

Patented Deo. 20, 1887.

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THERMOTIC REGULATOR POR INDICATORS.

Patented Dee. 20,1887.

UNITED STATES PATENT OFFICEo ADDISON WILEY, OF NEWARK, NEW JERSEY.

THERMOTIC REGULATOR FOR INCUBATORS.

SPECIFICATION forming part of Letters Patent No. 375,035, dated December 20, 1887.

Application filed February 25, 1887. Serial No. 228,896.

To @ZZ whom t may concern-.-

Beit known that I, ADDISON WILEY, a citiren of the United States, residing at Newark, Essex county, New Jersey, have invented certain new and useful Improvements in Incubators, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

The object of this invention is to regulate automatically the temperature within an incubator; and the invention consists in means within the incubator for operating upon a ventilator and upon a heatinglamp.

In the drawings, Figure 1 is a vertical longitudinal section of the entire apparatus. Fig. 2 is a plan ofthe same. Fig. 3 is aside elevation ot' the thermostat upon a larger scale. Fig. 4 isa plan of the same, and Fig. 5 an end view of the same. Eig. 6 is a side elevation of the lampburner and its regulating-lever upon a larger scale, the chimney being removed.

The incubator consists in a casing, c, containing in its top and bottom watertanks b and c, connected together at one end by a pipe, d, and at the other end by branches e c to a boiler, f.

g is alamp sustained below the boiler; 7i, its chi mney;', its wick-tube; It, a sleeve encircling the same, and Z a lever pivoted upon the burner at m to aetuate the sleeve to regulate the height ofthe dame.

j are shelves for the eggs; n, a Ventilatingaperture in the top of the casing a, and n an opening through the tank I) underneath such aperture n. v

p is a damper hinged by pivots 1J', and furnished with an arm, q, by which it maybe tipped to open and close the aperture 1L. A lever, o', pivoted upon the casing at r', is connected at one end by rod r2 to the lever Z, and at the other end by a slot, r3, to a piu, r, upon the damperp. The motion of the damper is thus imparted to the lever Z, so that when the damper is opened to cool the incubator by ventilation the sleeve 7c is raised to partially cover the wick, and thus diminish the heat ofthe boiler and the tanks b and c.

The thermostat for actuating the damper and lever o is atxed within the incubator near the upper tank, where the air is hottest,

(No model.)

and consists in a bed-plate, s, having two expansion-bars, s' and s, mounted thereon, and their united movement transmitted to a lever, si. Each bar is formed of hard rubber-21s, for instance, a half-inch diameter and thirty to forty inches long-and has affixed in each end a projecting piece of brass to form its attachments. The bed is provided with loose guides tQwhich steady the bars above the middle of their length to prevent bending. Both the bars are pivoted at one end to a lever, u, movable upon a pivot, u', fixed to the bedplate s, and the bar s is adj ustabl y clamped, by lock-nuts t', to a standard, t.

rI`he movement of the bar s' is transmitted through the lever u to the bar si, which is pivotally connected at its extremeend to the lever s3, so that the combined expansion of both bars is conveyed to such lever, which in turn operates upon the damper p through the medium of a lever, o, pivoted in the ventilating-aperture n. The lever v is connected, by a link, o','to the arm q upon the damper, and to the lever s3 by a link, w. The upper end of the lever s is provided with a swiveling nut, w', and the end of the link w is `furnished with a threaded stem, wg, by which the relation of the damper to the lever s3 may be altered.

By means of the lock-nuts t' and the swiveling nut w', which is fitted to turn without longitudinal movement in the end of the lever s3, the position of the damper at any given telnperature within the incubator may be readily varied to secure the right conditions for the desired temperature.

When in operationA and the damper properly adjusted to the desired temperature, the dame of the lamp heats the water in the boiler f, and the water then passes continuously in a circuit through the boiler and the tanks b and c. When the temperature exceeds the desired degree, the expansion of the thermostat-bars s' and s'L operates to open the Ventilating-damper and to simultaneously diminish the iiame of the lamp by elevating the sleeve It', and the generation of the heat is then reduced to the c lOO augment the flame beneath the boiler, so that the heat is increased in the required manner.

I employ hard rubber for the thermostatbars,because it has in other thermostats proved to possess a large range of expansion and contraction.

Heretofore incubators have been provided with connections from the thermostat to the damper on the outside of the casing, while in my construction such connections are so formed as to be adapted to operate Within the casing, thus avoiding the necessity of perforating the casing to permit the passage of the moving parts, and avoiding also the derangement to which the damper and its connections are subj ectedwhen such connections are located Without the casing of the incubator.

Having thus set forth the nature and operation of my invention, what I claim herein isrIhe combination, with an incubator having a Water heating and circulating apparatus, of the casing a, the boilerf, the tanks b and c,

arranged in the top and bottom, respectively, of the incubator, the Ventilating-aperture n in the top of the casing, the opening n' in the tank beneath it, a lamp having a llame-regulating sleeve applied to its wick-tube, `a thermostat arranged within the casing adjacent to the tank b, a connection from thethermostat to the damper within the casing through the aperture n, as and for the purpose set forth, and a connection from the exterior of the damper to the {laine-regulating sleeve to actuate the sleeve by the movement of the damper, the whole arranged and operated substantially as shown and described.

In testimony whereof I have hereunto set my hand in the presence of two subscribing wit nesses.

ADDISON WILY.

Wil nesses:

HENRY J. MILLER, THos. S. CRAN-n. 

